The Claim

In young healthy men undergoing negative energy balance, resting metabolic rate increases after adjustment for fat-free mass, indicating that metabolic adaptation to energy restriction involves factors beyond the loss of lean tissue.

Source: Effects of increased energy intake and/or physical activity on energy expenditure in young healthy men.

What the research says

Supports is higher

Support is ahead, but a single strong opposing study can change this.

Supports
46score
Challenges
0score

These are independent scores, not a percentage. Higher-grade studies count more, so a single strong opposing study can outweigh several weaker ones.

How it works
1 study reviewed
In plain English

When young healthy men eat fewer calories than they burn, their bodies burn slightly more energy at rest than expected based on the muscle they lose, suggesting other biological changes are contributing to this effect.

See the scientific wording

In young healthy men, resting metabolic rate increases during negative energy balance after adjusting for fat-free mass, indicating metabolic adaptation to energy restriction is not solely explained by loss of lean tissue.

What the research says

1 study

  1. Study: Effects of increased energy intake and/or physical activity on energy expenditure in young healthy men.

    Even when young men burned more calories by exercising more without eating extra food, their bodies still burned more calories at rest—even after accounting for muscle loss. This means their metabolism adjusted on its own, not just because they lost weight.

Score breakdown, mechanism chain, raw evidence, ideal studies needed & 1 supporting studies

Fit Body Science verdict — we translate health claims into clear verdicts backed by peer-reviewed research.

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